Changes in Vitreous Temperature During Intravitreal Surgery

RESULTS. The average midvitreal temperature before the vitrectomy was 33.0 6 1.38C, 30.7 6 1.78C after core vitrectomy, 32.9 6 1.38C after membrane peeling, and 29.2 6 1.48C after peripheral vitrectomy. The temperature before PC was 29.8 6 1.38C, and it increased to 31.5 6 1.98C post-PC. The differences in the temperatures between consecutive procedures were significant (P < 0.01, respectively, Wilcoxon signed-rank test). The difference in the temperatures of the same procedures among the different diseases was not significant except after membrane peeling. A significant correlation was detected between the number of PCs and the duration of the PCs, and between the duration of PCs and the change in vitreous temperature after PC (r ¼ 0.719, P ¼ 0.0010, and r ¼ 0.800, P ¼ 0.0002, respectively, Spearman’s rank correlation coefficient test). The temperature after PEA decreased significantly by 2.38C.